Question

thực hiện phép tính \(A=\dfrac{\left(\dfrac{2}{7}\right)^7.5^7+\left(\dfrac{9}{3}\right)^3:\left(\dfrac{3}{16}\right)^3}{2^7.5^2+512}\)

Answer 1

Sửa đề: (2/7)^7*7^7

\(A=\dfrac{\left(2\right)^7+\left(\dfrac{9}{3}:\dfrac{3}{16}\right)^3}{2^7\left(5^2+2^2\right)}\)

\(=\dfrac{\left(2\right)^7+\left(16\right)^3}{2^7\cdot29}\)

\(=\dfrac{2^7+2^7\cdot2^5}{2^7\cdot29}=\dfrac{1+2^5}{29}=\dfrac{33}{29}\)